Over 700 pages of confidential police files on 54 European terrorist cases were left unencrypted and exposed online. The files are understood to contain hundreds of names and telephone numbers of people associated with terrorism, along with analyses of terrorist groups. The documents date mainly from 2006 to 2008, and discuss the Madrid bombings, foiled attacks on planes with liquid explosives, and also terrorist investigations that have never been made public. A security investigation regarding this case is on-going, in coordination with the respective authorities at national level to which the staff member returned.”]
Source: https://arstechnica.com/tech-policy/2016/11/europol-hit-by-data-security-breach-blames-human-error/